Slid-valve mechanism.



W, SAMUELS.

SLIDE VALVE MECHANISM.

APPLICATION' man ma. 26. |914` [lll W. SAMUELS.

SLIDE VALVE MECHANISM.

APPLICATION HLED MAR.26,1914.

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SLIDE VALVE MECHANISM.

APPucATlou mio mn.2e.1914.

Patented July 16, 191s.

3 SHEETS-SHEET 3.

'lsn\\\\\\\\\\\\\\\\\ W/TNESSES W'ILHELM SAMUEIS. 01:" INDIANAPOLIS. INDLILNy sLIDE'vALvE MECHANISM.

Specification of Letters PatentY Patented July 16.1918.

.Application filed March 26. 1914. Seriaib;A 827,409.

To oil/whom fit may concern.'

A lie it known that l. WiLitiLu Sauver. :i subject of thtA Emperor of Gerin-any. and a resident of ln|lianapoli-. county of .the end of the cylinder i 'covered and a certain new and n-ct`ul Slidc'alve Merlianisni: and lA lo herehv declarethat the following is a full. clear. and exact description thereof. reference being had to thc accompanying drawings. iii which like nnnierals refer to like parts.

This invention relates to internal coniliustion engines. preferably of the four cycle type. and the use of a slide valve their-in for controlling the intake and exhaust.

The chief feature of the invention is the provision of an engine of said type with a reciprocatory slide valve of ielatively light weight and simply operated and arranged so that the gas pressure in the cylinder tends to force the valve against its seat.

In the forni shown the slide valve oper ates within the cylinder or rather across the explosion end t losion end and the cylinder head, and the inner surface thereof flat anchoperate's against a spring pressed packing ring `in which prevents leakage of gas.

Along with the foregoing is the provision of a suitable cam on a cam shafty for operating said slide valve and the result is that an extremely simple internal combustion engine is rovided. The pressure of the as holds t e valve to its seat and the valve is always stationary when there is a very high 4degree ofI pressure, as during .the texplosion of the as. lvhen the valve'is ,mov-.5 ing, there isv re atively little pressure. During the explosion period. the slide ports stand,` in an yopposite position relative to .the cylinder;A head ports, both outside. thus rotected by the packingring.y and this enaliiles one tol employ only a single slide valve. However, invention are not limited to gie slide valve.

some features ofr this the use of a sin- Tlie full nature of the invention will bep understood from the accompanying drawings and the following description `and claims. ln the drawings. Figure 1 is a central ver tical section through an internal combustion'engine and showing the parts in their positions at the time of the explosion. Fig. 2 is a plan view of a portion of the packing liereofrand between such ex-4 ring and oi' thc spring beneath it. Fig. il is' a `ection through a portion of the cylinder and the pat-king ring and spring on the line 2),25 of Fir'. Fig. l is, a vertical section tlll'UHLfll Ihr: upper en il.`V oi' one and :i half (.vlinilen am at a right angle to tli-.it'shovvn in Fig. l. Fig. 5 is a section on the line 5 -5 ot' Fig. 1. showing the cylinder heads and associated parts of one and a halt' c vlinfler Fig. I3 is a plan vieiv of the valve. Fig. T is. a central vertical section through the upper part of the cylinder aiid its head slijivving a modified forni of the invention. Fig. is similar to Fig. 'i'. showing another inodilied form. Fig. 9 is a plan view of the cylinder in Fig. T. with the cylinder head and valve omitted.

There is shown herein cylinders 10 of an internal combustion engine and a piston 11 for one: of said cylinders, each of said cylindersl being open at its lower end and in communication with a crank case 12. Between the cylinderhead 13 and the main part of the cylinder 10 there is space for a slide valve 14. It, ina sense. closes the explosion end of the cylinder. The end of the cylinder serves as a seal'J for the inner face of said slide valve, while the inner surface of the cylinder head serves as a seat for the outer surface of said valve.

To prevent. leakageof gas between the end of the cylinder 10 and the slide valve 1l, the endof the cylinder is provided with an annular recess 16 in which a ring of spring nietal 1T lies,`said nieta-l being'bowed upward transversely to form a spring support for a packin ring 18 which liesiipon the .paring 171 an substantially is flush with the iehtlfsurfaceL ofit'lefeylinder. and` upon said vrinlg'lSgtlie Jinneri silideivalve liesrandioperates. Hence, the'inner surface of said valve isplane. jTh'e space required for the slide valve is gained by a simple circular cutting operation in the cylinder head. Hence, the outer surface of the slide is convex and `of the same curve as the concave inner surface of the cylinder head. .60 is the crank shaft of the engine and 61 the piston rod. 6'2- is the spark plug.

The pressure Vof the as in the cylinder tends toi force the sli e valve outwardly against its seat in the inner surface of the cylinder head and thus hold it to its seat. and the packing ring 18 follows the valve in any such youtward movement or play thereof and maintains a tight joint between iio the vahe and ring to prevent :tnv leakage ot' gm lit-lucen the valve and cylint ci'.

'there i` a ca-ing 1li attached to the tippcr end ot the cylinder aud cylinder head anti in it there i an intake 30 through which the l'uel gas enterA a chalutier 31, from a earlatreter not` shown, and said chamber ha` a port` 32 with which a port 33 in the slide valve. 1.4 is adapted to regisl er at times aitd thus provide an inlet for the yfuel gais` to the cylinder. There in au exhaust port with which a port 3T in the'slide valve is adapted at timeV to regieter. The intake and exhatnt ports` liti and IiT ot' the slide valve 14 aie t'arthe apart titan the diatneler ot' the explosion end ot the cylinder so that at the time ofthe expltniou. sec Fig. 1.

Said ports are closed ou their under .aides by the packing' ring 1S and the Islide valve presents a solid sui-tace to the explosion chamber of the cylinder. llhen the explo- A ion occurs. eaid :lide valve is stationary. ttmsetluently. there is uo great wear offsaid valie since. at the time of extreme preasinc. il is IQtationary. .\ll 'tour valves aro crescent -shapett "lhe slide valves ol the plurality of cylinders are operated from a single, cani shaft .)U mounted in the housing` 19 and this is driven from the crank shaft of the engine through a Shaft .22, see Fig. 5, and gears 23 and 24. The movements of the slide valve are caused and determined by the form of the cams 25 on the cani shaft 29. Said cam has a cain groove into which a pin 2G from a shank 27 of the slide valve 14 projects. Said cam is divided into practically three sections. the surface 50, between two X marks, is the compression and explosion )art of the cam, the surface 51 is the eX- hattet` Section thereof, and the surface 52 is the intake section. 1t `will be observed that. the compression and the explosion section is substantiallyT concentric with the shaft 20 so that the slide valve will stand still. The invention is not limited to the particular location of the ports in the slide valveLnor to the form and direction of movementJ of the Cam 25. Also it` not limited to the use of a cani, hut the slide motion may be derived from an eccentric or a special kinematic device. nor to the location ot" the slidel valve. if it he held to its seat 4by ,aan pressure in the expltnion end ol' the cylinder.

ln the modified form shown in Figi: 7, the cvlinder and cylinder head and slide valve are arranged 4 ubstautially an in the 'previously de crilafd mechanism. exceptingl that a noinslidahle plate 4U i placed between the slide valie `tl aiid the explosion end of the. cvliiider` re-pectively het wcen the slide valve lil and the packing rings 1H. Said plate hael port.2 -l1 ainl adapted to, reetater with the intatte and c\l'ian t port` in the valve.

lu tlte operation ot thi '.t'oriu, the ,etw

prt-eure till iexerted ou thc valve as in the previnu etruclure. lacau e of the porte -ll and 42. atid the plate Jf() in acted upon by the einV preaeure. so that it beat against the valve 1l. and the packing:r ring 1R hec iin contact with the plate 4l) to prevent lea tage. While ihe plate is t'rce to yield to the cias pressure, four pins 43, see Fig'. lt. l`a`tened inthe cylinder and tilting` in correaponding.r holes in the. plate. prevent any .eide motion. The advantage of the plate -llt is lo protect the slide valve .from the explosion fire and facilitate lubrication.

In the modified forni shown in Fig. S. there is a plate l5 corresponding' tothe plate l() above, excepting that the plate .55 i-i rigid with the cylinder. beingr integral with it but otherwise having the ports 41 and 42. This plate likewise protects the slide valve and does not prevent the pressure of the gt against the slide valve. The packing: riircr 1S also acts against the slide valve here a` it does in the first; forni described.

The invention claimed. is:

1, ln an internal combustion tour cycle engine, a cylinder open on the exploaon ond. a cylinder head. and a Single `alide valve entirely covering with its inner urtace ila` open cylinder end and restingwitli il v ontei- .Qurtaee against the cylinder head. the cylin der head having toward the flat cylinder enti a receV so as to form together with the tattei' the chamber foi tht` Single slide valve in auch a way that said slide chanilter lne an open outlet to one side i'roni which the single slide valve is actuated and tn whnn it is laterally extended. l

Q. In an internal coinhtnlion engine. a cylinder open on the explosion end. a ey'lir der head. a slide valveentircly covering; u ith it.-l inner flat surface the open cylinder end. Vaid cylinder hav-ingA in its otherwi e tta' explosion cud adjacent to the slide valve au annular chamber concentric to the cylinder bore. and a vieldingly supported packing1 ringl in said chamber bearing with a tial surface on the tlat inner Surface of the Slide valve. l

3. ln an internal combustion engine. a cylinder open on the explosion end. a cylinder head. a single slide valve entirely coveringr with it` inner tlat` l#urtare the open cylinder end and reating;r willi ils outer Qurface against the cylinder head. Said cylinder having in ity otherwie tiat cxplo ion end adjacent the 4 lide valve an annular chantlier concentric to the cylinder bore. and a vieldiiigly supported, packing rinzcr in said chamber hearing willi a tial yant-tace on the tlat inner surface ot' ilie .-lit|e valve.

l. lu au intei'ual couilnt-tinu engine. a cylinder open ou the expliwiou cud. a c vlinder head. a Ainaltslide valve entirely coveringl with it.`V inner flat surface said open cylinder cial and rea-ting with its outer surface fllkl lll-i ig-zdnet the cylinder head, said cylinderI havlug 1n its otherwise flat explosion end adja- @cnt the slide valve an annular chamber conventi-ic tothe cylinder bore, e packing ring in :Mid chamber having e packing contact llicwwitli on both its inner vand its outer ann miler; flu-teces, and a Spring 1n said chamber ending to press the packing rlng with the Het omer lsurfce of the latter against the Het :nner surface of the slide valve.

5. lu an internal combustlon engine, e cylinder having a head with sultable intake oi the cylinder.

5?. in an internal combustion engine, e cylinder having a head with suitable intake and exhaust ports, a single slide-valve loretml :1nd operating between the cylinder lai-nfl and the ex losion endr of the cylinder mui having inte e and exhaust ports thereihrrmgli adapted to commumcate et proper times with the ports ihfthe cylinder head, and a sprin -pressed pecking ring `mounted in the cylin er end bearing against the inner side of the slide valve, the ports of said slide valve being sufliciently far apart that be closed by said packing ring.

7. In nn internal combustlon engine, a. cylinder having a head with suitable intake and exhaust ports,V und a single slide valve located and operating between the cylinder ,heed and the explosion end of thecylinder and having ports therethrough adapted to communicate et proper times with the ports from the cylinder head, the inner surface of seid valve being t plane surface andthe outer surface thereof being convex transversely and the inner surface of the cylinder head being concave transversely to serve as a seat for Seid valve.

In witness whereof, I have hereunto efxed my signature in the presence of the. witnesses herein named.

WILHELM sAMUELs.

Witnesses:

LOUIS ScHwrrzER, J. H. WELLS.

' in one positiony of said .valve they will both i 

